The Census in Arunachal Pradesh faces challenges due to:

The correct answer is: All of the above.

Arunachal Pradesh is a state in northeastern India. It is the largest state in the country by area, but it has the lowest population density. The state is home to a diverse range of ethnic groups, each with its own language and culture. The remote terrain of Arunachal Pradesh makes it difficult to access many parts of the state, and the linguistic diversity makes it difficult to communicate with people from different ethnic groups. Cultural sensitivities also need to be taken into account when conducting a census in Arunachal Pradesh, as some people may be reluctant to share personal information with strangers.

Here are some additional details about each of the challenges mentioned in the question:

• Remote terrain: Arunachal Pradesh is a mountainous state with a rugged terrain. This makes it difficult to access many parts of the state, especially during the monsoon season. The remoteness of the state also makes it difficult to conduct a census, as enumerators need to travel long distances to reach remote villages.
• Linguistic diversity: Arunachal Pradesh is home to a diverse range of ethnic groups, each with its own language. This makes it difficult to communicate with people from different ethnic groups, as enumerators may not be able to speak the local language. The linguistic diversity also makes it difficult to collect data, as people may not be able to understand the census forms or the questions that are being asked.
• Cultural sensitivities: Arunachal Pradesh is a culturally sensitive state, and people may be reluctant to share personal information with strangers. This can make it difficult to collect data on sensitive topics such as religion, caste, and tribe. Cultural sensitivities also need to be taken into account when conducting the census, as enumerators need to be respectful of local customs and traditions.